[PATCH v3 6/9] ASoC: mediatek: mt8192: support tdm in platform driver

[Jiaxin Yu <jiaxin.yu@mediatek.com>]

This patch adds mt8192 tdm dai driver.

Signed-off-by: Jiaxin Yu <jiaxin.yu@mediatek.com>
---
 sound/soc/mediatek/mt8192/mt8192-dai-tdm.c | 778 +++++++++++++++++++++
 1 file changed, 778 insertions(+)
 create mode 100644 sound/soc/mediatek/mt8192/mt8192-dai-tdm.c

diff --git a/sound/soc/mediatek/mt8192/mt8192-dai-tdm.c b/sound/soc/mediatek/mt8192/mt8192-dai-tdm.c
new file mode 100644
index 0000000000000..8383536b7ae00
--- /dev/null
+++ b/sound/soc/mediatek/mt8192/mt8192-dai-tdm.c
@@ -0,0 +1,778 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// MediaTek ALSA SoC Audio DAI TDM Control
+//
+// Copyright (c) 2020 MediaTek Inc.
+// Author: Shane Chien <shane.chien@mediatek.com>
+
+#include <linux/regmap.h>
+#include <sound/pcm_params.h>
+
+#include "mt8192-afe-clk.h"
+#include "mt8192-afe-common.h"
+#include "mt8192-afe-gpio.h"
+#include "mt8192-interconnection.h"
+
+struct mtk_afe_tdm_priv {
+	int id;
+	int bck_id;
+	int bck_rate;
+	int tdm_out_mode;
+	int bck_invert;
+	int lck_invert;
+	int mclk_id;
+	int mclk_multiple; /* according to sample rate */
+	int mclk_rate;
+	int mclk_apll;
+};
+
+enum {
+	TDM_OUT_I2S = 0,
+	TDM_OUT_DSP_A = 1,
+	TDM_OUT_DSP_B = 2,
+};
+
+enum {
+	TDM_BCK_NON_INV = 0,
+	TDM_BCK_INV = 1,
+};
+
+enum {
+	TDM_LCK_NON_INV = 0,
+	TDM_LCK_INV = 1,
+};
+
+enum {
+	TDM_WLEN_16_BIT = 1,
+	TDM_WLEN_32_BIT = 2,
+};
+
+enum {
+	TDM_CHANNEL_BCK_16 = 0,
+	TDM_CHANNEL_BCK_24 = 1,
+	TDM_CHANNEL_BCK_32 = 2,
+};
+
+enum {
+	TDM_CHANNEL_NUM_2 = 0,
+	TDM_CHANNEL_NUM_4 = 1,
+	TDM_CHANNEL_NUM_8 = 2,
+};
+
+enum  {
+	TDM_CH_START_O30_O31 = 0,
+	TDM_CH_START_O32_O33,
+	TDM_CH_START_O34_O35,
+	TDM_CH_START_O36_O37,
+	TDM_CH_ZERO,
+};
+
+static unsigned int get_tdm_wlen(snd_pcm_format_t format)
+{
+	return snd_pcm_format_physical_width(format) <= 16 ?
+	       TDM_WLEN_16_BIT : TDM_WLEN_32_BIT;
+}
+
+static unsigned int get_tdm_channel_bck(snd_pcm_format_t format)
+{
+	return snd_pcm_format_physical_width(format) <= 16 ?
+	       TDM_CHANNEL_BCK_16 : TDM_CHANNEL_BCK_32;
+}
+
+static unsigned int get_tdm_lrck_width(snd_pcm_format_t format)
+{
+	return snd_pcm_format_physical_width(format) - 1;
+}
+
+static unsigned int get_tdm_ch(unsigned int ch)
+{
+	switch (ch) {
+	case 1:
+	case 2:
+		return TDM_CHANNEL_NUM_2;
+	case 3:
+	case 4:
+		return TDM_CHANNEL_NUM_4;
+	case 5:
+	case 6:
+	case 7:
+	case 8:
+	default:
+		return TDM_CHANNEL_NUM_8;
+	}
+}
+
+static unsigned int get_tdm_ch_fixup(unsigned int channels)
+{
+	if (channels > 4)
+		return 8;
+	else if (channels > 2)
+		return 4;
+	else
+		return 2;
+}
+
+static unsigned int get_tdm_ch_per_sdata(unsigned int mode,
+					 unsigned int channels)
+{
+	if (mode == TDM_OUT_DSP_A || mode == TDM_OUT_DSP_B)
+		return get_tdm_ch_fixup(channels);
+	else
+		return 2;
+}
+
+/* interconnection */
+enum {
+	HDMI_CONN_CH0 = 0,
+	HDMI_CONN_CH1,
+	HDMI_CONN_CH2,
+	HDMI_CONN_CH3,
+	HDMI_CONN_CH4,
+	HDMI_CONN_CH5,
+	HDMI_CONN_CH6,
+	HDMI_CONN_CH7,
+};
+
+static const char *const hdmi_conn_mux_map[] = {
+	"CH0", "CH1", "CH2", "CH3",
+	"CH4", "CH5", "CH6", "CH7",
+};
+
+static int hdmi_conn_mux_map_value[] = {
+	HDMI_CONN_CH0,
+	HDMI_CONN_CH1,
+	HDMI_CONN_CH2,
+	HDMI_CONN_CH3,
+	HDMI_CONN_CH4,
+	HDMI_CONN_CH5,
+	HDMI_CONN_CH6,
+	HDMI_CONN_CH7,
+};
+
+static SOC_VALUE_ENUM_SINGLE_DECL(hdmi_ch0_mux_map_enum,
+				  AFE_HDMI_CONN0,
+				  HDMI_O_0_SFT,
+				  HDMI_O_0_MASK,
+				  hdmi_conn_mux_map,
+				  hdmi_conn_mux_map_value);
+
+static const struct snd_kcontrol_new hdmi_ch0_mux_control =
+	SOC_DAPM_ENUM("HDMI_CH0_MUX", hdmi_ch0_mux_map_enum);
+
+static SOC_VALUE_ENUM_SINGLE_DECL(hdmi_ch1_mux_map_enum,
+				  AFE_HDMI_CONN0,
+				  HDMI_O_1_SFT,
+				  HDMI_O_1_MASK,
+				  hdmi_conn_mux_map,
+				  hdmi_conn_mux_map_value);
+
+static const struct snd_kcontrol_new hdmi_ch1_mux_control =
+	SOC_DAPM_ENUM("HDMI_CH1_MUX", hdmi_ch1_mux_map_enum);
+
+static SOC_VALUE_ENUM_SINGLE_DECL(hdmi_ch2_mux_map_enum,
+				  AFE_HDMI_CONN0,
+				  HDMI_O_2_SFT,
+				  HDMI_O_2_MASK,
+				  hdmi_conn_mux_map,
+				  hdmi_conn_mux_map_value);
+
+static const struct snd_kcontrol_new hdmi_ch2_mux_control =
+	SOC_DAPM_ENUM("HDMI_CH2_MUX", hdmi_ch2_mux_map_enum);
+
+static SOC_VALUE_ENUM_SINGLE_DECL(hdmi_ch3_mux_map_enum,
+				  AFE_HDMI_CONN0,
+				  HDMI_O_3_SFT,
+				  HDMI_O_3_MASK,
+				  hdmi_conn_mux_map,
+				  hdmi_conn_mux_map_value);
+
+static const struct snd_kcontrol_new hdmi_ch3_mux_control =
+	SOC_DAPM_ENUM("HDMI_CH3_MUX", hdmi_ch3_mux_map_enum);
+
+static SOC_VALUE_ENUM_SINGLE_DECL(hdmi_ch4_mux_map_enum,
+				  AFE_HDMI_CONN0,
+				  HDMI_O_4_SFT,
+				  HDMI_O_4_MASK,
+				  hdmi_conn_mux_map,
+				  hdmi_conn_mux_map_value);
+
+static const struct snd_kcontrol_new hdmi_ch4_mux_control =
+	SOC_DAPM_ENUM("HDMI_CH4_MUX", hdmi_ch4_mux_map_enum);
+
+static SOC_VALUE_ENUM_SINGLE_DECL(hdmi_ch5_mux_map_enum,
+				  AFE_HDMI_CONN0,
+				  HDMI_O_5_SFT,
+				  HDMI_O_5_MASK,
+				  hdmi_conn_mux_map,
+				  hdmi_conn_mux_map_value);
+
+static const struct snd_kcontrol_new hdmi_ch5_mux_control =
+	SOC_DAPM_ENUM("HDMI_CH5_MUX", hdmi_ch5_mux_map_enum);
+
+static SOC_VALUE_ENUM_SINGLE_DECL(hdmi_ch6_mux_map_enum,
+				  AFE_HDMI_CONN0,
+				  HDMI_O_6_SFT,
+				  HDMI_O_6_MASK,
+				  hdmi_conn_mux_map,
+				  hdmi_conn_mux_map_value);
+
+static const struct snd_kcontrol_new hdmi_ch6_mux_control =
+	SOC_DAPM_ENUM("HDMI_CH6_MUX", hdmi_ch6_mux_map_enum);
+
+static SOC_VALUE_ENUM_SINGLE_DECL(hdmi_ch7_mux_map_enum,
+				  AFE_HDMI_CONN0,
+				  HDMI_O_7_SFT,
+				  HDMI_O_7_MASK,
+				  hdmi_conn_mux_map,
+				  hdmi_conn_mux_map_value);
+
+static const struct snd_kcontrol_new hdmi_ch7_mux_control =
+	SOC_DAPM_ENUM("HDMI_CH7_MUX", hdmi_ch7_mux_map_enum);
+
+enum {
+	SUPPLY_SEQ_APLL,
+	SUPPLY_SEQ_TDM_MCK_EN,
+	SUPPLY_SEQ_TDM_BCK_EN,
+	SUPPLY_SEQ_TDM_EN,
+};
+
+static int get_tdm_id_by_name(const char *name)
+{
+	return MT8192_DAI_TDM;
+}
+
+static int mtk_tdm_en_event(struct snd_soc_dapm_widget *w,
+			    struct snd_kcontrol *kcontrol,
+			    int event)
+{
+	struct snd_soc_component *cmpnt = snd_soc_dapm_to_component(w->dapm);
+	struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt);
+	struct mt8192_afe_private *afe_priv = afe->platform_priv;
+	int dai_id = get_tdm_id_by_name(w->name);
+	struct mtk_afe_tdm_priv *tdm_priv = afe_priv->dai_priv[dai_id];
+
+	if (!tdm_priv) {
+		dev_warn(afe->dev, "%s(), tdm_priv == NULL", __func__);
+		return -EINVAL;
+	}
+
+	dev_info(cmpnt->dev, "%s(), name %s, event 0x%x\n",
+		 __func__, w->name, event);
+
+	switch (event) {
+	case SND_SOC_DAPM_PRE_PMU:
+		mt8192_afe_gpio_request(afe->dev, true, tdm_priv->id, 0);
+		break;
+	case SND_SOC_DAPM_POST_PMD:
+		mt8192_afe_gpio_request(afe->dev, false, tdm_priv->id, 0);
+		break;
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static int mtk_tdm_bck_en_event(struct snd_soc_dapm_widget *w,
+				struct snd_kcontrol *kcontrol,
+				int event)
+{
+	struct snd_soc_component *cmpnt = snd_soc_dapm_to_component(w->dapm);
+	struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt);
+	struct mt8192_afe_private *afe_priv = afe->platform_priv;
+	int dai_id = get_tdm_id_by_name(w->name);
+	struct mtk_afe_tdm_priv *tdm_priv = afe_priv->dai_priv[dai_id];
+
+	if (!tdm_priv) {
+		dev_warn(afe->dev, "%s(), tdm_priv == NULL", __func__);
+		return -EINVAL;
+	}
+
+	dev_info(cmpnt->dev, "%s(), name %s, event 0x%x, dai_id %d\n",
+		 __func__, w->name, event, dai_id);
+
+	switch (event) {
+	case SND_SOC_DAPM_PRE_PMU:
+		mt8192_mck_enable(afe, tdm_priv->bck_id, tdm_priv->bck_rate);
+		break;
+	case SND_SOC_DAPM_POST_PMD:
+		mt8192_mck_disable(afe, tdm_priv->bck_id);
+		break;
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static int mtk_tdm_mck_en_event(struct snd_soc_dapm_widget *w,
+				struct snd_kcontrol *kcontrol,
+				int event)
+{
+	struct snd_soc_component *cmpnt = snd_soc_dapm_to_component(w->dapm);
+	struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt);
+	struct mt8192_afe_private *afe_priv = afe->platform_priv;
+	int dai_id = get_tdm_id_by_name(w->name);
+	struct mtk_afe_tdm_priv *tdm_priv = afe_priv->dai_priv[dai_id];
+
+	if (!tdm_priv) {
+		dev_warn(afe->dev, "%s(), tdm_priv == NULL", __func__);
+		return -EINVAL;
+	}
+
+	dev_info(cmpnt->dev, "%s(), name %s, event 0x%x, dai_id %d\n",
+		 __func__, w->name, event, dai_id);
+
+	switch (event) {
+	case SND_SOC_DAPM_PRE_PMU:
+		mt8192_mck_enable(afe, tdm_priv->mclk_id, tdm_priv->mclk_rate);
+		break;
+	case SND_SOC_DAPM_POST_PMD:
+		tdm_priv->mclk_rate = 0;
+		mt8192_mck_disable(afe, tdm_priv->mclk_id);
+		break;
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static const struct snd_soc_dapm_widget mtk_dai_tdm_widgets[] = {
+	SND_SOC_DAPM_MUX("HDMI_CH0_MUX", SND_SOC_NOPM, 0, 0,
+			 &hdmi_ch0_mux_control),
+	SND_SOC_DAPM_MUX("HDMI_CH1_MUX", SND_SOC_NOPM, 0, 0,
+			 &hdmi_ch1_mux_control),
+	SND_SOC_DAPM_MUX("HDMI_CH2_MUX", SND_SOC_NOPM, 0, 0,
+			 &hdmi_ch2_mux_control),
+	SND_SOC_DAPM_MUX("HDMI_CH3_MUX", SND_SOC_NOPM, 0, 0,
+			 &hdmi_ch3_mux_control),
+	SND_SOC_DAPM_MUX("HDMI_CH4_MUX", SND_SOC_NOPM, 0, 0,
+			 &hdmi_ch4_mux_control),
+	SND_SOC_DAPM_MUX("HDMI_CH5_MUX", SND_SOC_NOPM, 0, 0,
+			 &hdmi_ch5_mux_control),
+	SND_SOC_DAPM_MUX("HDMI_CH6_MUX", SND_SOC_NOPM, 0, 0,
+			 &hdmi_ch6_mux_control),
+	SND_SOC_DAPM_MUX("HDMI_CH7_MUX", SND_SOC_NOPM, 0, 0,
+			 &hdmi_ch7_mux_control),
+
+	SND_SOC_DAPM_CLOCK_SUPPLY("aud_tdm_clk"),
+
+	SND_SOC_DAPM_SUPPLY_S("TDM_EN", SUPPLY_SEQ_TDM_EN,
+			      AFE_TDM_CON1, TDM_EN_SFT, 0,
+			      mtk_tdm_en_event,
+			      SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+
+	SND_SOC_DAPM_SUPPLY_S("TDM_BCK", SUPPLY_SEQ_TDM_BCK_EN,
+			      SND_SOC_NOPM, 0, 0,
+			      mtk_tdm_bck_en_event,
+			      SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+
+	SND_SOC_DAPM_SUPPLY_S("TDM_MCK", SUPPLY_SEQ_TDM_MCK_EN,
+			      SND_SOC_NOPM, 0, 0,
+			      mtk_tdm_mck_en_event,
+			      SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+};
+
+static int mtk_afe_tdm_apll_connect(struct snd_soc_dapm_widget *source,
+				    struct snd_soc_dapm_widget *sink)
+{
+	struct snd_soc_dapm_widget *w = sink;
+	struct snd_soc_component *cmpnt = snd_soc_dapm_to_component(w->dapm);
+	struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt);
+	struct mt8192_afe_private *afe_priv = afe->platform_priv;
+	int dai_id = get_tdm_id_by_name(w->name);
+	struct mtk_afe_tdm_priv *tdm_priv = afe_priv->dai_priv[dai_id];
+	int cur_apll;
+
+	/* which apll */
+	cur_apll = mt8192_get_apll_by_name(afe, source->name);
+
+	return (tdm_priv->mclk_apll == cur_apll) ? 1 : 0;
+}
+
+static const struct snd_soc_dapm_route mtk_dai_tdm_routes[] = {
+	{"HDMI_CH0_MUX", "CH0", "HDMI"},
+	{"HDMI_CH0_MUX", "CH1", "HDMI"},
+	{"HDMI_CH0_MUX", "CH2", "HDMI"},
+	{"HDMI_CH0_MUX", "CH3", "HDMI"},
+	{"HDMI_CH0_MUX", "CH4", "HDMI"},
+	{"HDMI_CH0_MUX", "CH5", "HDMI"},
+	{"HDMI_CH0_MUX", "CH6", "HDMI"},
+	{"HDMI_CH0_MUX", "CH7", "HDMI"},
+
+	{"HDMI_CH1_MUX", "CH0", "HDMI"},
+	{"HDMI_CH1_MUX", "CH1", "HDMI"},
+	{"HDMI_CH1_MUX", "CH2", "HDMI"},
+	{"HDMI_CH1_MUX", "CH3", "HDMI"},
+	{"HDMI_CH1_MUX", "CH4", "HDMI"},
+	{"HDMI_CH1_MUX", "CH5", "HDMI"},
+	{"HDMI_CH1_MUX", "CH6", "HDMI"},
+	{"HDMI_CH1_MUX", "CH7", "HDMI"},
+
+	{"HDMI_CH2_MUX", "CH0", "HDMI"},
+	{"HDMI_CH2_MUX", "CH1", "HDMI"},
+	{"HDMI_CH2_MUX", "CH2", "HDMI"},
+	{"HDMI_CH2_MUX", "CH3", "HDMI"},
+	{"HDMI_CH2_MUX", "CH4", "HDMI"},
+	{"HDMI_CH2_MUX", "CH5", "HDMI"},
+	{"HDMI_CH2_MUX", "CH6", "HDMI"},
+	{"HDMI_CH2_MUX", "CH7", "HDMI"},
+
+	{"HDMI_CH3_MUX", "CH0", "HDMI"},
+	{"HDMI_CH3_MUX", "CH1", "HDMI"},
+	{"HDMI_CH3_MUX", "CH2", "HDMI"},
+	{"HDMI_CH3_MUX", "CH3", "HDMI"},
+	{"HDMI_CH3_MUX", "CH4", "HDMI"},
+	{"HDMI_CH3_MUX", "CH5", "HDMI"},
+	{"HDMI_CH3_MUX", "CH6", "HDMI"},
+	{"HDMI_CH3_MUX", "CH7", "HDMI"},
+
+	{"HDMI_CH4_MUX", "CH0", "HDMI"},
+	{"HDMI_CH4_MUX", "CH1", "HDMI"},
+	{"HDMI_CH4_MUX", "CH2", "HDMI"},
+	{"HDMI_CH4_MUX", "CH3", "HDMI"},
+	{"HDMI_CH4_MUX", "CH4", "HDMI"},
+	{"HDMI_CH4_MUX", "CH5", "HDMI"},
+	{"HDMI_CH4_MUX", "CH6", "HDMI"},
+	{"HDMI_CH4_MUX", "CH7", "HDMI"},
+
+	{"HDMI_CH5_MUX", "CH0", "HDMI"},
+	{"HDMI_CH5_MUX", "CH1", "HDMI"},
+	{"HDMI_CH5_MUX", "CH2", "HDMI"},
+	{"HDMI_CH5_MUX", "CH3", "HDMI"},
+	{"HDMI_CH5_MUX", "CH4", "HDMI"},
+	{"HDMI_CH5_MUX", "CH5", "HDMI"},
+	{"HDMI_CH5_MUX", "CH6", "HDMI"},
+	{"HDMI_CH5_MUX", "CH7", "HDMI"},
+
+	{"HDMI_CH6_MUX", "CH0", "HDMI"},
+	{"HDMI_CH6_MUX", "CH1", "HDMI"},
+	{"HDMI_CH6_MUX", "CH2", "HDMI"},
+	{"HDMI_CH6_MUX", "CH3", "HDMI"},
+	{"HDMI_CH6_MUX", "CH4", "HDMI"},
+	{"HDMI_CH6_MUX", "CH5", "HDMI"},
+	{"HDMI_CH6_MUX", "CH6", "HDMI"},
+	{"HDMI_CH6_MUX", "CH7", "HDMI"},
+
+	{"HDMI_CH7_MUX", "CH0", "HDMI"},
+	{"HDMI_CH7_MUX", "CH1", "HDMI"},
+	{"HDMI_CH7_MUX", "CH2", "HDMI"},
+	{"HDMI_CH7_MUX", "CH3", "HDMI"},
+	{"HDMI_CH7_MUX", "CH4", "HDMI"},
+	{"HDMI_CH7_MUX", "CH5", "HDMI"},
+	{"HDMI_CH7_MUX", "CH6", "HDMI"},
+	{"HDMI_CH7_MUX", "CH7", "HDMI"},
+
+	{"TDM", NULL, "HDMI_CH0_MUX"},
+	{"TDM", NULL, "HDMI_CH1_MUX"},
+	{"TDM", NULL, "HDMI_CH2_MUX"},
+	{"TDM", NULL, "HDMI_CH3_MUX"},
+	{"TDM", NULL, "HDMI_CH4_MUX"},
+	{"TDM", NULL, "HDMI_CH5_MUX"},
+	{"TDM", NULL, "HDMI_CH6_MUX"},
+	{"TDM", NULL, "HDMI_CH7_MUX"},
+
+	{"TDM", NULL, "aud_tdm_clk"},
+	{"TDM", NULL, "TDM_BCK"},
+	{"TDM", NULL, "TDM_EN"},
+	{"TDM_BCK", NULL, "TDM_MCK"},
+	{"TDM_MCK", NULL, APLL1_W_NAME, mtk_afe_tdm_apll_connect},
+	{"TDM_MCK", NULL, APLL2_W_NAME, mtk_afe_tdm_apll_connect},
+};
+
+/* dai ops */
+static int mtk_dai_tdm_cal_mclk(struct mtk_base_afe *afe,
+				struct mtk_afe_tdm_priv *tdm_priv,
+				int freq)
+{
+	int apll;
+	int apll_rate;
+
+	apll = mt8192_get_apll_by_rate(afe, freq);
+	apll_rate = mt8192_get_apll_rate(afe, apll);
+
+	if (!freq || freq > apll_rate) {
+		dev_warn(afe->dev,
+			 "%s(), freq(%d Hz) invalid\n", __func__, freq);
+		return -EINVAL;
+	}
+
+	if (apll_rate % freq != 0) {
+		dev_warn(afe->dev,
+			 "%s(), APLL cannot generate %d Hz", __func__, freq);
+		return -EINVAL;
+	}
+
+	tdm_priv->mclk_rate = freq;
+	tdm_priv->mclk_apll = apll;
+
+	return 0;
+}
+
+static int mtk_dai_tdm_hw_params(struct snd_pcm_substream *substream,
+				 struct snd_pcm_hw_params *params,
+				 struct snd_soc_dai *dai)
+{
+	struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
+	struct mt8192_afe_private *afe_priv = afe->platform_priv;
+	int tdm_id = dai->id;
+	struct mtk_afe_tdm_priv *tdm_priv = afe_priv->dai_priv[tdm_id];
+	unsigned int tdm_out_mode = tdm_priv->tdm_out_mode;
+	unsigned int rate = params_rate(params);
+	unsigned int channels = params_channels(params);
+	unsigned int out_channels_per_sdata =
+		get_tdm_ch_per_sdata(tdm_out_mode, channels);
+	snd_pcm_format_t format = params_format(params);
+	unsigned int tdm_con = 0;
+
+	/* calculate mclk_rate, if not set explicitly */
+	if (!tdm_priv->mclk_rate) {
+		tdm_priv->mclk_rate = rate * tdm_priv->mclk_multiple;
+		mtk_dai_tdm_cal_mclk(afe,
+				     tdm_priv,
+				     tdm_priv->mclk_rate);
+	}
+
+	/* calculate bck */
+	tdm_priv->bck_rate = rate *
+			     out_channels_per_sdata *
+			     snd_pcm_format_physical_width(format);
+
+	if (tdm_priv->bck_rate > tdm_priv->mclk_rate)
+		dev_warn(afe->dev, "%s(), bck_rate > mclk_rate rate", __func__);
+
+	if (tdm_priv->mclk_rate % tdm_priv->bck_rate != 0)
+		dev_warn(afe->dev, "%s(), bck cannot generate", __func__);
+
+	dev_info(afe->dev, "%s(), id %d, rate %d, channels %d, format %d, mclk_rate %d, bck_rate %d\n",
+		 __func__,
+		 tdm_id, rate, channels, format,
+		 tdm_priv->mclk_rate, tdm_priv->bck_rate);
+
+	dev_info(afe->dev, "%s(), out_channels_per_sdata = %d\n",
+		 __func__, out_channels_per_sdata);
+
+	/* set tdm */
+	if (tdm_priv->bck_invert)
+		tdm_con |= 1 << BCK_INVERSE_SFT;
+
+	if (tdm_priv->lck_invert)
+		tdm_con |= 1 << LRCK_INVERSE_SFT;
+
+	if (tdm_priv->tdm_out_mode == TDM_OUT_I2S) {
+		tdm_con |= 1 << DELAY_DATA_SFT;
+		tdm_con |= get_tdm_lrck_width(format) << LRCK_TDM_WIDTH_SFT;
+	} else if (tdm_priv->tdm_out_mode == TDM_OUT_DSP_A) {
+		tdm_con |= 0 << DELAY_DATA_SFT;
+		tdm_con |= 0 << LRCK_TDM_WIDTH_SFT;
+	} else if (tdm_priv->tdm_out_mode == TDM_OUT_DSP_B) {
+		tdm_con |= 1 << DELAY_DATA_SFT;
+		tdm_con |= 0 << LRCK_TDM_WIDTH_SFT;
+	}
+
+	tdm_con |= 1 << LEFT_ALIGN_SFT;
+	tdm_con |= get_tdm_wlen(format) << WLEN_SFT;
+	tdm_con |= get_tdm_ch(out_channels_per_sdata) << CHANNEL_NUM_SFT;
+	tdm_con |= get_tdm_channel_bck(format) << CHANNEL_BCK_CYCLES_SFT;
+	regmap_write(afe->regmap, AFE_TDM_CON1, tdm_con);
+
+	if (out_channels_per_sdata == 2) {
+		switch (channels) {
+		case 1:
+		case 2:
+			tdm_con = TDM_CH_START_O30_O31 << ST_CH_PAIR_SOUT0_SFT;
+			tdm_con |= TDM_CH_ZERO << ST_CH_PAIR_SOUT1_SFT;
+			tdm_con |= TDM_CH_ZERO << ST_CH_PAIR_SOUT2_SFT;
+			tdm_con |= TDM_CH_ZERO << ST_CH_PAIR_SOUT3_SFT;
+			break;
+		case 3:
+		case 4:
+			tdm_con = TDM_CH_START_O30_O31 << ST_CH_PAIR_SOUT0_SFT;
+			tdm_con |= TDM_CH_START_O32_O33 << ST_CH_PAIR_SOUT1_SFT;
+			tdm_con |= TDM_CH_ZERO << ST_CH_PAIR_SOUT2_SFT;
+			tdm_con |= TDM_CH_ZERO << ST_CH_PAIR_SOUT3_SFT;
+			break;
+		case 5:
+		case 6:
+			tdm_con = TDM_CH_START_O30_O31 << ST_CH_PAIR_SOUT0_SFT;
+			tdm_con |= TDM_CH_START_O32_O33 << ST_CH_PAIR_SOUT1_SFT;
+			tdm_con |= TDM_CH_START_O34_O35 << ST_CH_PAIR_SOUT2_SFT;
+			tdm_con |= TDM_CH_ZERO << ST_CH_PAIR_SOUT3_SFT;
+			break;
+		case 7:
+		case 8:
+			tdm_con = TDM_CH_START_O30_O31 << ST_CH_PAIR_SOUT0_SFT;
+			tdm_con |= TDM_CH_START_O32_O33 << ST_CH_PAIR_SOUT1_SFT;
+			tdm_con |= TDM_CH_START_O34_O35 << ST_CH_PAIR_SOUT2_SFT;
+			tdm_con |= TDM_CH_START_O36_O37 << ST_CH_PAIR_SOUT3_SFT;
+			break;
+		default:
+			tdm_con = 0;
+		}
+	} else {
+		tdm_con = TDM_CH_START_O30_O31 << ST_CH_PAIR_SOUT0_SFT;
+		tdm_con |= TDM_CH_ZERO << ST_CH_PAIR_SOUT1_SFT;
+		tdm_con |= TDM_CH_ZERO << ST_CH_PAIR_SOUT2_SFT;
+		tdm_con |= TDM_CH_ZERO << ST_CH_PAIR_SOUT3_SFT;
+	}
+
+	regmap_write(afe->regmap, AFE_TDM_CON2, tdm_con);
+
+	regmap_update_bits(afe->regmap, AFE_HDMI_OUT_CON0,
+			   HDMI_CH_NUM_MASK_SFT,
+			   channels << HDMI_CH_NUM_SFT);
+	return 0;
+}
+
+static int mtk_dai_tdm_set_sysclk(struct snd_soc_dai *dai,
+				  int clk_id, unsigned int freq, int dir)
+{
+	struct mtk_base_afe *afe = dev_get_drvdata(dai->dev);
+	struct mt8192_afe_private *afe_priv = afe->platform_priv;
+	struct mtk_afe_tdm_priv *tdm_priv = afe_priv->dai_priv[dai->id];
+
+	if (!tdm_priv) {
+		dev_warn(afe->dev, "%s(), tdm_priv == NULL", __func__);
+		return -EINVAL;
+	}
+
+	if (dir != SND_SOC_CLOCK_OUT) {
+		dev_warn(afe->dev, "%s(), dir != SND_SOC_CLOCK_OUT", __func__);
+		return -EINVAL;
+	}
+
+	dev_info(afe->dev, "%s(), freq %d\n", __func__, freq);
+
+	return mtk_dai_tdm_cal_mclk(afe, tdm_priv, freq);
+}
+
+static int mtk_dai_tdm_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+	struct mtk_base_afe *afe = dev_get_drvdata(dai->dev);
+	struct mt8192_afe_private *afe_priv = afe->platform_priv;
+	struct mtk_afe_tdm_priv *tdm_priv = afe_priv->dai_priv[dai->id];
+
+	if (!tdm_priv) {
+		dev_warn(afe->dev, "%s(), tdm_priv == NULL", __func__);
+		return -EINVAL;
+	}
+
+	/* DAI mode*/
+	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_I2S:
+		tdm_priv->tdm_out_mode = TDM_OUT_I2S;
+		break;
+	case SND_SOC_DAIFMT_DSP_A:
+		tdm_priv->tdm_out_mode = TDM_OUT_DSP_A;
+		break;
+	case SND_SOC_DAIFMT_DSP_B:
+		tdm_priv->tdm_out_mode = TDM_OUT_DSP_B;
+		break;
+	default:
+		tdm_priv->tdm_out_mode = TDM_OUT_I2S;
+	}
+
+	/* DAI clock inversion*/
+	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+	case SND_SOC_DAIFMT_NB_NF:
+		tdm_priv->bck_invert = TDM_BCK_NON_INV;
+		tdm_priv->lck_invert = TDM_LCK_NON_INV;
+		break;
+	case SND_SOC_DAIFMT_NB_IF:
+		tdm_priv->bck_invert = TDM_BCK_NON_INV;
+		tdm_priv->lck_invert = TDM_LCK_INV;
+		break;
+	case SND_SOC_DAIFMT_IB_NF:
+		tdm_priv->bck_invert = TDM_BCK_INV;
+		tdm_priv->lck_invert = TDM_LCK_NON_INV;
+		break;
+	case SND_SOC_DAIFMT_IB_IF:
+	default:
+		tdm_priv->bck_invert = TDM_BCK_INV;
+		tdm_priv->lck_invert = TDM_LCK_INV;
+		break;
+	}
+
+	return 0;
+}
+
+static const struct snd_soc_dai_ops mtk_dai_tdm_ops = {
+	.hw_params = mtk_dai_tdm_hw_params,
+	.set_sysclk = mtk_dai_tdm_set_sysclk,
+	.set_fmt = mtk_dai_tdm_set_fmt,
+};
+
+/* dai driver */
+#define MTK_TDM_RATES (SNDRV_PCM_RATE_8000_48000 |\
+		       SNDRV_PCM_RATE_88200 |\
+		       SNDRV_PCM_RATE_96000 |\
+		       SNDRV_PCM_RATE_176400 |\
+		       SNDRV_PCM_RATE_192000)
+
+#define MTK_TDM_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
+			 SNDRV_PCM_FMTBIT_S24_LE |\
+			 SNDRV_PCM_FMTBIT_S32_LE)
+
+static struct snd_soc_dai_driver mtk_dai_tdm_driver[] = {
+	{
+		.name = "TDM",
+		.id = MT8192_DAI_TDM,
+		.playback = {
+			.stream_name = "TDM",
+			.channels_min = 2,
+			.channels_max = 8,
+			.rates = MTK_TDM_RATES,
+			.formats = MTK_TDM_FORMATS,
+		},
+		.ops = &mtk_dai_tdm_ops,
+	},
+};
+
+static struct mtk_afe_tdm_priv *init_tdm_priv_data(struct mtk_base_afe *afe)
+{
+	struct mtk_afe_tdm_priv *tdm_priv;
+
+	tdm_priv = devm_kzalloc(afe->dev, sizeof(struct mtk_afe_tdm_priv),
+				GFP_KERNEL);
+	if (!tdm_priv)
+		return NULL;
+
+	tdm_priv->mclk_multiple = 128;
+	tdm_priv->bck_id = MT8192_I2S4_BCK;
+	tdm_priv->mclk_id = MT8192_I2S4_MCK;
+	tdm_priv->id = MT8192_DAI_TDM;
+
+	return tdm_priv;
+}
+
+int mt8192_dai_tdm_register(struct mtk_base_afe *afe)
+{
+	struct mt8192_afe_private *afe_priv = afe->platform_priv;
+	struct mtk_afe_tdm_priv *tdm_priv;
+	struct mtk_base_afe_dai *dai;
+
+	dev_info(afe->dev, "%s()\n", __func__);
+
+	dai = devm_kzalloc(afe->dev, sizeof(*dai), GFP_KERNEL);
+	if (!dai)
+		return -ENOMEM;
+
+	list_add(&dai->list, &afe->sub_dais);
+
+	dai->dai_drivers = mtk_dai_tdm_driver;
+	dai->num_dai_drivers = ARRAY_SIZE(mtk_dai_tdm_driver);
+
+	dai->dapm_widgets = mtk_dai_tdm_widgets;
+	dai->num_dapm_widgets = ARRAY_SIZE(mtk_dai_tdm_widgets);
+	dai->dapm_routes = mtk_dai_tdm_routes;
+	dai->num_dapm_routes = ARRAY_SIZE(mtk_dai_tdm_routes);
+
+	tdm_priv = init_tdm_priv_data(afe);
+	if (!tdm_priv)
+		return -ENOMEM;
+
+	afe_priv->dai_priv[MT8192_DAI_TDM] = tdm_priv;
+
+	return 0;
+}
-- 
2.18.0